This value reports the current reading from current transformer CT1 on the Eaton Genesis II unit, expressed in tenths of an amp, with a special value of -1 meaning that CT channel is not present or unavailable on this particular unit. An admin monitors it to track the electrical load on the circuit sensed by CT1 and to distinguish a genuine zero-current reading from a channel that simply isn't populated. For example, a reading of 125 indicates 12.5 amps of current on that circuit, while a reading of -1 tells the admin not to expect data from CT1 on this unit's hardware configuration.